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Intermittent connectivity from Comcast with the SBG6580

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Connection is intemittent as the modem resets/reboots itself every few hours. When it is connected, speeds are extremely slow. This has been going on for at least 3-4 months now.  Latest speedtest shows  a pathetic 4.35Mbps down and 3.75Mbs up. I have one coax running from the modem continuously to a splitter from the main cable. All the connectors are in good shape with no signs of corrosion. 
 
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File  
Security Enabled BPI+
 
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 7 597000000 Hz -4.6 dBmV 34.2 dB 17880865 3074054
2 Locked unknown 9 609000000 Hz -3.4 dBmV 0.0 dB 0 0
3 Locked unknown 11 621000000 Hz -3.8 dBmV 0.0 dB 6533 34832
4 Locked QAM256 12 627000000 Hz -2.7 dBmV 27.2 dB 693386 231707
5 Locked unknown 13 633000000 Hz -3.0 dBmV 0.0 dB 0 0
6 Locked QAM256 14 639000000 Hz -3.2 dBmV 31.1 dB 41506126 2419379
7 Locked QAM256 15 645000000 Hz -2.0 dBmV 30.5 dB 14327023 2871662
8 Locked unknown 16 651000000 Hz -2.4 dBmV 0.0 dB 0 0
 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 44 5120 Ksym/sec 36500000 Hz 47.0 dBmV
2 Locked ATDMA 41 2560 Ksym/sec 18900000 Hz 47.0 dBmV
3 Locked ATDMA 42 5120 Ksym/sec 23700000 Hz 47.0 dBmV
4 Locked ATDMA 43 5120 Ksym/sec 30100000 Hz 47.0 dBmV
 
 
Current System Time: Fri May 16 19:27:11 2014
 
 
3xxxxxxxxxxxxxxxxx6
Information
Standard Specification Compliant DOCSIS 3.0
Hardware Version 1
Software Version SBG6580-6.5.2.0-GA-06-077-NOSH
Cable Modem MAC Address cxxxxxxxxxxxxd
Cable Modem Serial Number 3xxxxxxxxxxxxxxxxxx6
CM certificate Installed
 
Status
System Up Time 0 days 14h:31m:47s
Network Access Allowed
Cable Modem IP Address ---.---.---.---
 
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